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avformat/concatdec: avoid NULL dereference when failed to open file.

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Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Zhang Rui 2015-01-29 17:55:32 +08:00 committed by Michael Niedermayer
parent d39fa69dfc
commit 038f3a173f
1 changed files with 3 additions and 0 deletions
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libavformat/concatdec.c
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@ -482,6 +482,9 @@ static int concat_read_packet(AVFormatContext *avf, AVPacket *pkt)
ConcatStream *cs; ConcatStream *cs;
AVStream *st; AVStream *st;
if (!cat->avf)
return AVERROR(EIO);
while (1) { while (1) {
ret = av_read_frame(cat->avf, pkt); ret = av_read_frame(cat->avf, pkt);
if (ret == AVERROR_EOF) { if (ret == AVERROR_EOF) {